With a number of reports calling for a 4-inch iPhone later this year, a flurry of new mockup designs — seen above — have surfaced that attempt to illustrate what the device might look like based on rumors. These most recent mockups come from design student Daniel Bautista, who bases his design on a leaked Photo Stream image from last summer. The next-generation iPhone is also rumored to have metal casing, LTE compatibility, and improved battery life. Are you planning on purchasing a new iPhone at some point this year?